Don't lose filter priority when merging two Filter Chain
Allow to set the filter priority in the config array passed to the factory
Fix Multicheckbox & radio button with Disable condition
Revert changes
Fix Radio & MultiCheckbox View Helper
New Fix
Revert back
New fix for radio button
Changed the check from method_exists to is_callable to allow the use of the __call() magic method
Add Filter\FilterChain unit test to test if filter priorities are kept when merging one filterChain into another.
Add InputFilter\Factory unit test to check that the priority setting in the filters key array are passed to the FilterChain
Added unit tests for the ClassMethods::hydrator() method to test the change from method_exists() to is_callable()
Removed method from the ClassMethodsProtectedSetter TestAsset because it's not required in the tests
Mail\Headers.php: Adjust regex to RFC 5322

According to RFC 5322 (http://tools.ietf.org/html/rfc5322#section-2.2), a field name may contain "printable US-ASCII characters (i.e., characters that have values between 33 and 126, inclusive), except colon".
Mail\Header/GenericHeader.php: Adjust regex to RFC 5322
change variable naming
updated Zend_Captcha and Zend_Validate with changes from #4183
Add test case for disable attribute
Add test case for disable attr
Merge pull request #4148 from leup/filterspriority

Filters priority setting when populating filters in inputfilter factory and not losing it when merging filter chains